Adding-machine.



F. J. TILLMAN.

ADDING MACHINE.

APPLICATION FILED 00122211910.

1,003,672. Patented se t.19,1911.

E I 2 SHEBTS-SHEET 1.

flhnw Lmihml V 1 f o, a: o w i: o i: o 1: o i: 0 i: o

Ill ,1 11 NJ f 7' 1. F11 11 3s BY F. J. TILLMAN.

- ADDING MACHINE.

APPLICATION FILED 0013.28, 1910.

1,003,672, Patented Sept. 19, 1911.

2 SHEETS-SHEET 2.

c- 9 c2 3 2 & g s 1 Q .Q 9 i g E '1 1 i 1 9. 1 Q

J; i 1 l 1 .1 a I a 1 C Abb b inventor:

as Ed. illman mg. m auhz 1 6. B. ATT Y5 onia nn STATES PATENT oF IoE.

FERDIN ND J. TILLMAN, OF ST. LOUIS, MISSOURI.-

Alanine-M CHINE.

I Specification. of Letters Eatent; lfatenteul Sept, 1%}, 1911,

Ap ilicationfiled October 28, 1910. Serial No. 589,533.

being had to the accompanyingdrawings.

forming part of this specification.

My invention relates to an adding. ma-

chine of a'sin'iple and inexpensive construction, the machine helng of that type where in there is a series of numeral Wheel mechawheel mechanism to the next adjacent no; niei'al Wheel mechanlsni. I

Figure 1 is a top or planview of my addlng machine, with the casingpartly inhorizontal section. Fig. II is avertical longitudinal section. through thegmachine. Fig. III is an enlai 'ed viewpartly in sec-- tion and pali'tly'in elevation. of two of the n'ninernl Wheel mechanisms,andthe actuating devices therefor. l ig. IV is en enlarged elevation of one of the adding; mechanisms, with the casing and shafts in section. Fig. V. is a cross section taken on line VV, Figplln In the accompanying drawings: A designates the casing of my machine having a key-hoard 1. At the rear of the keyboard is a sight onening through which the numetal Wheels maybe viewed. T he key-board is provided with a plurality of; perforations in which the stemsof the keys operate.

3 designates the keys arranged in rows extending longitudinally of the key-boar and hearing ing p ei .lv nine of such rows of keys,- pi'oviding eigl1ty-one kevs in ali. Each key has a. stem operable in the key-hoard and ineach hey stem is a notch that receives side of the key-hoard, (see Figs. 11 and V), Whichlimits the upward movements of and supports thekeys; The lower ends of the key stems are inclined and located in diflfegenthorizontal planes.

nisms and a separate actuating device for. each numeral. Wheel 1necl1anism, neans being;- provided for carryingii'om one-numeral neiels lie 9, inclusive, there bcdesignetes a, numeral Wheel shaft e37.-

tending transversely of the machine back ofthe key-board and beneath the sight opening' 2 in the casing.

8 e transmission Wheel shaft beneath and parallel with the numeral Wheel shaft.

designates numeral wheels loosely arranged on the numeral wheelshatt? and spaced apart by distance sleeves 1O inte 'ral with the wheels and provided. with toothed circular flanges 11 facing the numeral wheels of lower numerical order adjacent to the ones of higher order by which said flanges are carried. :Each. numeral wheelhas fixed to it a toothed wheel 12.located adjacent to the toothed flange 11 of the numeral wheel of next higher. order.

l3 designates transmission wheels loosely mounted on the transmission. wheel shaft 8 in mesh with the toothed wheels 12 fixed to the numeral wheels above said tzansmission wheels.

1 i are-ratchet Wheels alongside the transmission wheels on their shaft driving engagement between these parts losing fur nished by pewls' l5 cartied by the transmission Wheels and engaging the teeth of the ratchetI-"Wheels Each ratchet Wheel has fixed-to it a pinion 16 that is operated by a actuating device fore the numeral wheel of a higher cider moved one step at the completion of a 1'0-' cation of a transmission vvheel.

The several numeral Wheels of my machine and the operating member's associated I with them as described are arranged sub stantially in alinement with the rows of keys 3 corresponding'thereto.

On the base a of-the casing of my machine are posts 18 supporting lower and upper guide rollers 19, between which the key operated devices for'operating the numeral wheel mechanisms ride backwardly and forwardly with reciprocating motion upon the operation of the keys of the machine.

20 designates slide bars lo'oselymounted between the lower and upper guide rollers 19 for backward and forward movements, and each of which is provided at its rear end with a rack-21 in mesh with the pinion 16 of the numeral wheel mechanism, corresponding thereto. Each slide bar is provided with nine upwardly projecting inclined cams 22 of gradually increasing height from one of the cams located beneath the stem of a numeral 1 key to the cam beneath a numeral 9 key in line with said numeral 1 key, As the upper ends of the cam 22 are located in different horizontal planes the slide bar may be moved rearwardly in response to a movement of a key stem'w-ithout striking any of the other key stems.

23 are retracting springs connected to the slide bars 20 by which they are moved in a forward direction. While a slide bar is moving to normal position under the influence of a spring 28, thedepressed key is automatically restored by the cam 22 which lies directly under it. After being restored, the keys are locked in their normal posiion, above the cams 22, by means of the de; tents 6.;

It will be readily understood -from the foregoing that when any particular key of the machine is depressed, its inclined lower end will ride downwardly upon the cam ot' the slide bar beneath it and, in so doing, cause said slide bar to move rearwardly. The cams of the slide bars are of such height and pitch as to provide for the slide bar rack 21being moved to cause a member of its teeth corresponding to the integer of the key depressed to cooperate with the pinion 16 it meshes with and operate the numeral wheel mechanism. As a consequence, the result of the key depressed is shown upon the numeral wheel directly operated by the slide bar and interyening parts, and

. upon two or more of the numeral wheels if carrying action takes place, due to the carrying teeth 13 of the transmission wheels being brought into service.

To provide for positive stoppage of the transmission wheels 16 of my machine when.

a kev has been depressed and the slide bar 20 has been moved thereby, I introduce into the-machine movable locking bars 24 arranged alongside the slide bars, and having cams 25 that are engaged by the stems of the keys when they are depressed to operate the slide bars. These locking bars are moved rearwardly during the latter portions of the downward movements of the keys and each bar has a finger 26 at its rear end that enters between teethof the transsaid key stems being- -located mission wheel it approaches to serve as a lock for such wheel. The locking bars are returned to normal positions by retracting springs 27.

I claim 1. In an adding machine, numeral wheel mechanism, a slide bar' 156w actuating said numeral wheel mechanism, said slide bar being provided with a row of cams'the upper ends of which are located in different horizontal planes, and key stems adapted topperate said slide barg the lower ends of said key stems being located in different horizontal planes above said cams-and below the top edge of the slide bar.

2;- In an adding machine, numeral wheel mechanism, a slide bar for actuating said numeral wheel mechanism, said slide bar being provided with a row oi. cams the upper endsof which are located in different horizontal planes, key stems adapted to operate said slide bar, the lower ends of horizontal planes above said cams and be- ,low the top edge of the slide bar, and a spring for restoring said slide bar to norinal position, the key stems being engaged with the cams'so as to move to normal position in unison with the slide bar.

3. In an adding machine, numeral wheel mechanism, a slide bar for actuating said numeral wheel mechanism, said slide bar being provided with a row of cams the upper ends of which are located in diii'erent horizontal planes, key stems adapted to operate said slide bar, the lower ends of said key stems being located in different hori; zontal planes above said cams and below the top edge of the slide bar, a spring for restoring said slide bar to normal posit-ion, the key stems being engaged with the cams so as to move to normal position in unison with the slide bar, and a detent for holding the key stems in their normal position.

4:. In an adding machine, numeral wheel mechanism, a slide bar numeral wheel mechanism, said slide bar being provided with a row of cams the upper ends of which are located in difierent horizontal planes, a locking bar arranged adjacent to said slide bar and provided with cams which lie opposite to the cams on said slide bar, said locking bar having a finger adapted to constitute a stop for the numeral wheel mechanism, and vertically movable key stems the lower ends of which lie directly above said cams, the lower ends of said. key stems being located in different horizontal planes.

5. In an adding machine, numeral wheel in diitcrent for actuating said I mechanism comprising a numeral wheel, a.

transmission wheel meshing with the numeral wheel, a pawl carried by the transmission wheel, a ratchet wheel cooperable with said pawl, a pinion fixed t0 the ratchet ing bar having a finger adapted to interwheel, a slide bar having teeth which mesh lock With the transmission Wheel to con- 10 with the pinion, said slide bar being prostitute a stop therefor. vided With a row of cams, key stems operable on the cams to operate said slide her, and FERDINAND TILLMAN a locking bar operable by the key stems to In the presence of lock the numeral wheel mechanism after E. B. LINN,

' said slide bar hasbeen aotu'ated said lock- A. J. MCCAULEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

